Wow, that could upgrade so many deserving TRS80 Model 100's.... (always liked the basic simplicity of SRAM boards) On 12/12/2020 11:00 AM, Ethan O'Toole via cctalk wrote:

I think my Model 100 is 24K of storage.... is there something I'm missing? I did re-cap it. Everyone that has one should do this -- they leak. - Ethan -- : Ethan O'Toole

On Sat, Dec 12, 2020 at 5:48 PM Chris Zach via cctalk <cctalk at classiccmp.org> wrote: So there are spaces for 3 more 6264 chips then? Those look abundant around $2 each. -ethan

All caps? I have several of these that probably need it then. http://www.classiccmp.org/cini Long Island S100 User?s Group Get Outlook<https://aka.ms/qtex0l> for iOS ________________________________ From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Ethan Dicks via cctalk <cctalk at classiccmp.org> Sent: Saturday, December 12, 2020 7:13:00 PM To: Ethan O'Toole <ethan at 757.org>; General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> Subject: TRS-80 Model 100 caps (was Re: WTB: CompuPro / Godbout RAM 17) On Sat, Dec 12, 2020 at 2:51 PM Ethan O'Toole via cctalk <cctalk at classiccmp.org> wrote: I should pull mine out and do this. I know exactly where it is but I haven't powered it on for years. I think I have the floppy drive too, in the same box. -ethan

On Sun, Dec 13, 2020 at 12:12 AM Ethan Dicks via cctalk <cctalk at classiccmp.org> wrote: The original Model 100 took special RAM modules. Each was a ceramic substrate with 4 6116 RAM chips (surface mount) soldered on. All address decoding was on the M100 main PCB, the modules had 4 chip select lines, one for each RAM. These modules are 0.7" wide, so even if you cut traces and modify the address decoder to use 8K RAMs of the 6264 type, you have to bend pins and socket strips to get them to go in. The Model 102, I think, used 6264s -tony